Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'x86_bugs_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 bug documentation update from Borislav Petkov:
- Add EPERM to the possible PR_SET_SPECULATION_CTRL pr_ctl() error
codes to "legitimize" it
* tag 'x86_bugs_for_v7.0_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/x86: Fix PR_SET_SPECULATION_CTRL error codes
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-4
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-4
Documentation/userspace-api/spec_ctrl.rst
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-4
Documentation/userspace-api/spec_ctrl.rst
···
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ERANGE arg3 is incorrect, i.e. it's neither PR_SPEC_ENABLE nor
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PR_SPEC_DISABLE nor PR_SPEC_FORCE_DISABLE.
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ENXIO Control of the selected speculation misfeature is not possible.
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See PR_GET_SPECULATION_CTRL.
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ENXIO For PR_SPEC_STORE_BYPASS: control of the selected speculation misfeature
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is not possible via prctl, because of the system's boot configuration.
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EPERM Speculation was disabled with PR_SPEC_FORCE_DISABLE and caller
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tried to enable it again.
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EPERM Speculation was disabled with PR_SPEC_FORCE_DISABLE and caller tried to
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enable it again.
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EPERM For PR_SPEC_L1D_FLUSH and PR_SPEC_INDIRECT_BRANCH: control of the
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mitigation is not possible because of the system's boot configuration.
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======= =================================================================
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Speculation misfeature controls